Ebyte 433C33, User Manual

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Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (433L37) user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd 10
5.2.
Frequency range and channels
Model
Default frequency Frequency range
Channel
spacing Channels
Hz Hz Hz
E90-DTU (433L37) 433M 410~441M 1M
32
，
half duplex
★
Note: In the same area when multiple data transceivers are communicating one to one at the same time, it is
recommended to set the channel spacing between each group of data transceivers at 2MHz or more.
5.3. Air data rate
Model
Default air data
rate Levels
Air data rate(bps)
bps bps
E90-DTU (433L37) 2.4k 6
0.3
、
1.2
、
2.4
、
4.8
、
9.6
、
19.2k
★ Note: The higher the air data rate, the faster the transmission rate, the transmission distance is also closer; when the
rate meets the requirements, the lower air data rate, the better quality.
5.4. Current parameters
Model
Transmitting current mA Standby current mA
12V 24V 12V 24V
E90-DTU (433L37) 1138 558 50 27
★ Note: It is recommended to retain more than 50% of the current margin when selecting the power supply, which will
help the data transceiver to work steadily for a long time.
5.5. Transceiver Length and Sub-packing Mode
Model Buffer Sub-package
E90-DTU (433L37) 512 bytes Automatic subcontracting of 197 bytes to send
★
Note:
1. If the data received by the station in a single time is larger than the capacity of a single packet, the excess data
will be automatically allocated to the second transmission until the completion of transmission.
2. The data transceiver cannot receive data which is more than the buffer capacity;